python 设计一个学生类，这个学生类包括学生的学号、姓名和成绩，定义函数打印，可以打印学生的学号、姓名、成绩。计算这几名学生的成绩平均分，并进行显示

class Student:
def __init__(self, id, name, score):
self.id = id
self.name = name
self.score = score

def print_info(self):
print("学号：" + str(self.id))
print("姓名：" + self.name)
print("成绩：" + str(self.score))

students = [Student(1, "张三", 90), Student(2, "李四", 87), Student(3, "王五", 92), Student(4, "赵六", 85)]

sum_score = 0
for student in students:
student.print_info()
sum_score += student.score

average_score = sum_score / len(students)
print("平均成绩：" + str(average_score))